Two-layer curtain coater system

Abstract

The present invention provides a 2-layer curtain coater that supplies a 2-layered paint curtain formed from a first paint curtain and a second paint curtain to the surface of a transported web to overcoat a first paint and a second paint in two layers on the surface of the web, the 2-layer curtain coater being able to prevent paint loss during coating preparation. The 2-layer curtain coater includes a first curtain nozzle for the forming of the first paint curtain and a second curtain nozzle for the forming of the second paint curtain and, in addition, in that the first curtain nozzle and the second curtain nozzle are relatively movable between a segregated coating preparation position and a merged coating operation position wherein, in the coating preparation position, the first paint and the second paint are recovered in a state independent of each other by the recovery of the first paint curtain from the first curtain nozzle by way of a first recovery pan and the recovery of the second paint curtain from the second curtain nozzle by way of a second recovery pan and, in the coating operation position, the 2-layered paint curtain is formed from the first paint curtain from the first curtain nozzle and the second paint curtain from the second curtain nozzle to overcoat the first paint and the second paint in two layers on the surface of the web.

1 . A 2-layer curtain coater that supplies a 2-layered paint curtain formed from a first paint curtain and a second paint curtain to a surface of a transported web to overcoat a first paint and a second paint in two layers on the surface of the web, said 2-layer curtain coater system comprising:
 a first curtain nozzle configured for forming the first paint curtain; and   a second curtain nozzle configured for forming the second paint curtain, said first curtain nozzle and said second curtain nozzle being relatively movable between a segregated coating preparation position and a merged coating operation position.   
   
   
       2 . The 2-layer curtain coater of  claim 1 , wherein, in said segregated coating preparation position, the 2-layer curtain coater system is configured for recovering the first paint and the second paint in a state independent of each other. 
   
   
       3 . The 2-layer curtain coater of  claim 2 , further comprising a first recovery pan configured for recovering the first paint curtain from said first curtain nozzle. 
   
   
       4 . The 2-layer curtain coater of  claim 3 , further comprising a second recovery pan configured for recovering the second paint curtain from said second curtain nozzle. 
   
   
       5 . The 2-layer curtain coater of  claim 1 , wherein, in said merged coating operation position, the 2-layered paint curtain includes the first paint curtain from said first curtain nozzle and the second paint curtain from said second curtain nozzle and is for overcoating the first paint and the second paint in the two layers on the surface of the web.